2166360653499 has 32 divisors (see below), whose sum is σ = 3350996436480. Its totient is φ = 1219223757312.

The previous prime is 2166360653461. The next prime is 2166360653539. The reversal of 2166360653499 is 9943560636612.

It is not a de Polignac number, because 2166360653499 - 2⁷ = 2166360653371 is a prime.

It is a super-2 number, since 2×2166360653499² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2166360653399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7817587 + ... + 8089955.

It is an arithmetic number, because the mean of its divisors is an integer number (104718638640).

Almost surely, 2^{2166360653499} is an apocalyptic number.

2166360653499 is a deficient number, since it is larger than the sum of its proper divisors (1184635782981).

2166360653499 is a wasteful number, since it uses less digits than its factorization.

2166360653499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278099.

The product of its (nonzero) digits is 37791360, while the sum is 60.

The spelling of 2166360653499 in words is "two trillion, one hundred sixty-six billion, three hundred sixty million, six hundred fifty-three thousand, four hundred ninety-nine".